Gasoline gauge for automobile engines



March 30 1926.

Filed Auggst A222, '194 J. C. TAPP GASOLINE GAUGE FOR AUTOMOBILE ENGINESPatented Mar. 3o, 1926.

y UNITED STATES JOHN C. TABP, OF'MONARCH, COLORADO.

GASOLINE GAUGE FOR AUTOMOBILE ENGINES.

Application led August 22, 1924. Serial No. 733,574.

To aZZ whom it may concern:

Be it known that I, JOHN C. TAPP, a citizen of the United States ofAmerica, resid` ingl at Monarch, county of Boulder, and State ofColorado, have invented a new and useful Gasoline Gauge for AutomobileEngiues, oi which the 'following is a specification.

My inventionrrelates to a gauge for measuring the level of a liquid in acontainer and more-particularly to a gasoline gauge of the type commonlyused on automobiles.

The general object of the invention is a gauge which is simple inconstruction and operation, and can be installed at low cost.

For a full understanding of the invention and its inode of operation, Imake reference to the accompanying drawings in which.:

Figure 1, is a side elevation of the front end portion of an automobileshowing the application of my gasoline measuring and indicating gauge tothe gasoline supply pipe that conveys the gasoline from the gasolinesupply tank to the carburetor.

Figure 2, is a side elevation of the measuring and indicating gauge.

Figure 3, is a front view of the indicator on the instrument board.

Figure 4, is a vertical section of the cylinder which contains theindicating fluid, and

, the inlet and outlet pipesr and the lower end of the indicating andmeasuring gauge.

Figure is a top view of the measuring gauge.

Figure 6, is a horizontal sectional view of the gauge, on the line 6-6of Figure. 2, and Figure 7, isa sectional View of a portion of thegasoline tank, showing the pressure cylinder arranged therein.

Similar letters of reference refer to similar parts throughout the'several views.

In Fig. 1v of the drawings,'1 represents 4the pressure cylinder of myhydrostatic measuring and indicating gauge. The cylinder 1 is connectedat its bottom 2 to the supply pipe 5, while at the top 8 it is connectedby means of a pipe 9 to the instru nient board 10./4'I`he position ofthe cylinder 1 relatively to the tank 6 is so chosen that so long lasthere is any gasoline in the. tank, there is a hydrostatic pressuretending to force gasoline into the cylinder 1, they top of the cylinder1 being disposed a substantial.

distance above the bottom of the tank' 6. Thus the' level of gasoline inthe' cylinder 1 will rise and fall in proportion to the -amount otliquid in the tank and thefairfor. in

the cylinder Willbe under a'pressure-k pro?v portion ate thereto.

Ihe pipe or airline 9 is connected tothe inlet 11 of a container ,13which is in com-l munication -a-t itsbottom with 'an additionalcontainer 31. The container 31 is provided with a closure, preferably inthe form of a plug $2 adapted to be displaced lin vertical direction. Tothis end, the plug may be screw-threaded telco-'operate with a similarscrew. thread on the 31.

The

erably effected through a stopper or ca interior of the container inlet11 into the-container 18 is pret-- through which also extends 'a `pipe14 rom .I

near the bottom of the container upwardly into the gauge tube 23. Theipe 14:v may be sealed against ingress of' air y means of a packinggland 15, including suitable packing 'material in the recess 16.

The gauge glass 23 is'prefer'ably set into corresponding' recesses 24and 25 in blocks 2O and 21A interconnected by'rods f2.2l whichl makescrew-threaded engagement'.v with one of the blocks, as for instance,the lbottom block 2,0 and provided'vtfith vnuts 27 at thev `an yintegralunit with a common partition Wall 33 providingy the communication 34.

The tube '23 is set behind and exposed through the slot bf a scale 28graduated in suitable units. The scale is attached to the instrumentboard'by means of screws 29,

"other endv for drawing the'blocks toward each other upon the glass..'In' the top' block f while the gauge may be supported on the scale bymeans of screws 28A extending into blocks 2O and 21A.

The cylinder may be `conveniently connected to thepipe 5 supplyinggasoline to the carburetor A7,-hy-1neans cfa T-connection 4.

The operation is as follows 4 According to the amountof gasoline in.ytank 6, the air pressure in line 9 will force more or less of the liquidin container 13 up through the pipe 14 into the so'A that the level of'the liqui will indicatev on'- the-scale 28 the amount of the gasolineiii auge glass '232 lll? .in the tank G, as indicated in Fig. 7,

tank 6. The plug` 32 may be adjusted from time to time to bringthe levelot the liquid to the correctscale iudicatiom The cylinder 1 may bemounted directly In that case the con'nnunication between the tank (land the cylinder 1 may be made by means ot' atube 30 extending,T fromnear the bottom of cylinder 1 through the wall thereof.

Having' described my invention what-1 l claim as new and desire tosecure by Lettere` Patent is 1* 1. Apparatus for imlicatinp,` the amountof Igasoline in the supply tank of an automobile, comprising,r a reselthe bottom otl which is disposed a substailitial distance below thebottoni o'l' the tank and the top ot' which is disposed a. substantialdistance abovethe bottom of the. tank. a fili/id connection between thebottom of the tank and the bottom of the vessel, an indicatingr tubemounted. on the dash board, a liquid conterranno tainer adjacent thevindicating' tube, com'-4 posetl ot' two compartments in juxtapositionand interconnected near the bottom, one ot' the compartments beingclosed and having a fluid connection from near its bottom to the bottoniof the indicating tube, means normally disposed near the top of theother compartment and movable for displacement' ot liquid therein, and aluid connection between said vessel and the top of the conipartmenthaving the connection to the indicating tube.

Q. Apparatus accordingto claim 1, whe-rein the compartment containing`the means i'or the displacement ot' liquid is tubula and provided withinterior screw threads ein tending),l to near the bottom andthe meansfor displacement of the liquid is a screw-threa `l4 ed plug cooperatingwith said screw threads. In testimony whereof I atiix my signature.

JOHN C. TAPP.

